updated msg

Author: debnathshoham

pandas/tests/frame/indexing/test_insert.py

@@ -93,6 +93,6 @@ def test_insert_item_cache(self, using_array_manager):
     def test_insert_frame(self):
         # GH#42403
         df = DataFrame({"col1": [1, 2], "col2": [3, 4]})
-        msg = "Expected a 1D array, got an array with shape (2, 2)"
+        msg = r"Expected a 1D array, got an array with shape \(2, 2\)"
         with pytest.raises(ValueError, match=msg):
             df.insert(1, "newcol", df)